GXT2 - 3X1 Intelligent, High
Frequency, Online UPS
10/15/20kVA USER MANUAL
E1-20010329-C-1.0
Liebert Corporation
Do not place magnetic storage media on top of the unit as it can
corrupt the data stored on them.
Electromagnetic Compatibility
WARNING
This is a Class A UPS product. In a domestic environment this
product may cause radio interference, in which case the user
may be required to take additional measures.
Limits on use:
WARNING
This UPS should not be supplied from electrical power
systems of the 'IT' (Impedance a Terre ) type.
(IEC 364-ELECTRICAL INSTALLATION OF
BUILDINGS)
Content
1
Chapter 1 Introduction
1.1 Application
1
1
2
5
1.3 System Function Block
1.4 Features
Chapter 2 Installation
2.1 Unpacking Inspection
5
5
2.2 Outline and Panel Description
2.2.1 Outline
5
2.2.2 Front Panel
7
2.2.3 Rear Panel
8
2.3 Installation
8
2.3.1 Important Note
2.3.2 Installation Procedure
2.4 Connection of External Batteries
8
10
13
17
Chapter 3 Operation
3.1 Operating Mode
17
17
18
18
19
20
21
21
22
24
25
26
3.1.1 Normal Mode
3.1.2 Bypass Mode
3.1.3 Battery Mode
3.1.4 ECO Mode
3.1.5 Failure Mode
3.2 Operation
3.2.1 Startup and Initialization
3.2.2 Turn On the Inverter
3.2.3 Manual Battery Self-testing
3.2.4 Turn off the Inverter
3.2.5 Totally Shutdown the System
3.2.6 LCD Panel Operation
26
27
Chapter 4 Maintenance and Storage
I. Battery Maintenance
II. Keep Air Vent Unblocked
III. UPS State Check
27
28
28
28
31
IV. Function Inspection
Chapter 5 Troubleshooting
35
Appendix 1 LCD Panel Displays and Operation
1. Constitution of Display Panel
2. Function of display Panel
3. Menu Operation
35
36
39
42
43
46
4. Information LCD-displaying Priority
Relay Communication Mode
Appendix 2 Product Specification
Appendix 3 Accessories
49
6
Chapter 1 Product Introduction
Chapter 1 Introduction
1.1 Application
GXT2-3X1 Series UPS provides high quality AC power to your precision instrument. It
can be applied in Computer Center , Network Management Center, Communication
System, Automation Control System, precision instrument or other Critical Systems.
1.2 Classification
" GXT2-3X1 " Series include 10kVA, 15kVA and 20kVA UPS products, shown in the
following table:
Capacity
Model
10kVA
15kVA
20kVA
GXT2-3X1-0100L
Extended Battery
Cabinet is required
GXT2-3X1-0150L
Extended Battery
Cabinet is required
GXT2-3X1-0200L
Extended Battery
Cabinet is required
Description
1.3 System Function Block
System can run with as a single UPS, or in Hot-standby mode to increase the system
reliability (Refer to figure 1-2).
Maintenance bypass
bypass
Short circuit cable
for hot standby
bypass breaker
Electronic
Transfer
Switch
Load
Inverter
Rectifier
Utility
Utility Switch
Maintenance
switch
Charger
Battery
Group1
Battery
Group 2
Figure 1-1 single UPS module
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Chapter 1 Product Introduction
7
Maintenance bypass
bypass
bypass Breaker
Backup
UPS
Electronic
Transfer
Switch
Load
Inverter
Utility
Rectifier
Utility Breaker
Maintenance
switch
Charger
Master UPS
Battery
Group1
Battery
Group 2
Figure 1-2 hot-standby system
1.4 Features
GXT2-3X1 Series Three phase input/Single phase output 10kVA/15kVA /20kVA UPS
is an advanced, intelligent, Online with Sinusoidal waveform output UPS system. The
system adopts high-frequency double conversion topology structure with high input
power factor, wide input voltage range, with the following Key features:
ꢀ UPS can operate with loss of input phases (up to 2 phases)
ꢀ Digital Signal Processing (DSP) Controlled.
ꢀ Self- diagnostic
ꢀ Intelligent battery management
ꢀ LCD & LED annunciation
ꢀ Static by pass
ꢀ Maintenance bypass
ꢀ Large internal charger
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Chapter 2 Installation
9
Chapter 2 Installation
2.1 Unpacking Inspection
1. Unpack the packing box to move the UPS to position , be careful not to drop it as it is
heavy.
2. In the event of product damage due to transportation, please notify Liebert or its
authorized agent.
2.2 Outline and Panel Description
2.2.1 Outline
LCD Display Panel
Supporting caster
Adjustable Footpad
Ventilation holes on front panel
Figure 2-1 UPS Front view
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Chapter 2 Installation
Air-inlet holes on Front Panel
Utility Switch
Bypass Switch
Maintenance Switch
Figure 2-2 Front view without panel
Utility
Fault
Battery
Inverter
Bypass
On/Silence Key
LCD Display
Enter Key
Off Key
Scroll Key
Figure 2-3 LCD display Panel
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Chapter 2 Installation
11
contact closure port
Alarm Relay Port
Ventilation holes
Input/Output Terminals block
Figure 2-4 rear panel
2.2.2 Front Panel
Parts' Function Description
Input Switch
Used for controlling the utility input to UPS.
10kVA UPS uses three-pole 63A/250VAC breaker
15/20kVA UPS uses three-pole 100A/250VAC breaker
Used for controlling the bypass input to UPS
10kVA UPS uses 80A/250VAC circuit breaker;
15/20kVA UPS uses 125A/250VAC circuit breaker
For switching UPS to maintenance bypass.
Note: To be operated by trained technical Personnel only.
for ventilation of UPS
Bypass Switch
Maintenance
switch
Front Panel air
inlet hole
LCD Panel and Description is in Appendix 1 in detail.
2.2.3 Rear Panel
Parts' Function Description
Input/output
Used for UPS input/output cable connection and
terminals
external battery connection for UPS
Provide Optical Coupler Dry Contact control
signal, for OS and UPS shutdown.
Contact closure port
Alarm relay port
bProvide relay Dry Contact alarm/ control signal,
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Chapter 2 Installation
It can be included in monitoring system defined
by users .
Heat Dissipation and Used for heat dissipation and ventilation of UPS
ventilation holes
2.3 Installation
2.3.1 Important Note
1. Please position the UPS on the flat ground/surface ..
2. The distance from the rear and side panels of the UPS to the wall or other equipment
should be greater than 20cm, and the air inlets on the front panel and at the bottom of
the UPS should be kept unobstructed to facilitate ventilation and heat dissipation.
3. Please ensure that the UPS is installed in an environment in compliance with UPS
environmental specification.
4. Avoid using the UPS in dusty or corrosive environment.
5. Even if the UPS is shutdown, there could be high voltage inside, untrained personnel
must not open the UPS as there may be danger of electric shock.
6. Install four-pole or three-pole interactive circuit breaker with capacity higher than
80A(suitable for 10kVA system）or 125A（for 15kVA/20kVA system）on the hot line
of Three-phase utility input to isolate the input source in case of emergency. When
using three-pole interactive circuit breaker, utility neutral line need not go through the
circuit breaker and can be connected with UPS' neutral line directly.
7. Please use right cable connection method to ensure the safety of UPS or customer
equipment::
Input hot
output hot
line
U
V
W
line
U
P
S
output
neutral line
Load
Input neutral
line
N
E
4-pole Interactive
circuit breaker
Figure 2-5（a） right cable connection
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Chapter 2 Installation
13
Input hot
line
output hot
line
U
V
W
U
P
S
Input neutral
line
output
neutral line
Load
N/E
Figure 2-5 （b） wrong cable connection
ꢁWarning
Classified according to European standard EN55022 , this is an A level UPS product.
When it is used in family house, it may generate radio interference, user should take
other measures in this condition.
2.3.2 Installation Procedure
1. Prior to any wire connection, please confirm that all the input and output circuit
breakers are in “OFF”state;
2. As shown in Figure 2-6, connect the input cables（three hot lines, neutral line and
earth line）to the correspondent terminals and secure the screw;
ꢁNote
Please do not reverse connection of the input hot line and neutral line！
Because the input default configuration of system's U phase is bypass input, please
ensure the proper connection of U phase.
Please don't use the power source socket on the wall as the UPS' input source.
3. Connect the input cables （hot lines, neutral line and earth line）of user's equipment
to the correspondent UPS output terminals refer , figure 2-6 .
ꢁNote
When connecting the input and output cables, the input hot line and neutral line must
be connected correctly and the UPS must be connected to earth firmly.
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Chapter 2 Installation
L1
B_L B_N
+
-
+ -
Hot standby B_N End
Battery1 + Terminal
al
Hot standby B_L End
Hot standby L1 End
Battrery1 - Terminal
Battery2 + Terminal
Battery2 - Terminal
Figure 2-6（a） 10kVA Input/output terminals( upper terminals' block）
N U
L N
V W
Input GND
Output GND
Output Neutral line
Input Neutral line
Input U phase line
Input V phase line
Output phase line
Input W phase line
Figure 2-6（b）10kVA Input/output terminals (lower terminals' block）
B_N
L1 B_L
- + -
+
Battery1+Terminal
Hot standby B_N End
Hot standby B_L End
Hot standby L1 End
Battery1 - Terminal
Battery2 + Terminal
Battery2-Terminal
Figure 2-6（c） 15/20kVA Input/output terminals (upper terminals' block）
U
N
V
W L
N
Output GND
Input GND
Input Neutral line
Input U phase line
Input V phase line
Output Neutral line
Output phase line
Input W phase line
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Chapter 2 Installation
15
Figure 2-6（d） 15/20kVA Input/output terminals( lower terminals' block）
ꢁNote
For 10kVA system, at least 8AWG or 10mm2 copper wire should be used for input
neutral line, input U phase line, hot standby L1 terminal, B_L terminal, B_N terminal
and output neutral line and hot line；input V or W phase lines and battery lines should
be 10AWG or 6mm2 copper wire at least.
For 15/20kVA system, at least 3AWG or 25mm2 copper wire should be used for input
neutral line, input U phase line, hot standby L1 terminal, B_L terminal, B_N terminal
and output neutral line and hot line；input V or W phase lines and battery lines should
be 5AWG or 16mm2 copper wire at least.
4. For external battery connection, please refer to the procedures of external battery
cables connection (please refer to figure 2-4);
5. To connect the UPS to servers for OS shutdown, please connect server's serial port
to the contact closure port at the rear of the UPS. Follow installation procedure of OS
shutdown software ( Liebert's multiLink ) for proper installation.
2.4 Connection of External Batteries
1. The system needs to be connected with two strings of 240V batteries, the switch on
the battery cabinet must be in "OFF" position, prior to connecting the batteries.
ꢁNote
Batteries of different models and make can not be used together.
2. Confirm that the batteries quantity conforms the UPS' specification, voltage of each
group of batteries should be 240 Vdc nominal or around 250 Vdc measured with a volt
meter.
3. Use a voltage meter to confirm that the voltage across the battery terminals on the
UPS Input/output terminals' block is zero, before connecting the battery cable to the
UPS.
4. According to the wire connection shown in Figure 2-10, connect the positive
pole( red ) and negative pole( black ) to the "+" and "-" battery terminals on terminals'
block respectively and secure the terminals, pay attention not to reverse the batteries
connection . For 15/20kVA UPS, it is necessary to use Ferrite T-core in the
accessories as shown in Figure 2-10;
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Chapter 2 Installation
Battery Cabinet
Breaker of Battery Cabinet
Battery 2
_
+
_
+
Battery 1
Figure 2-10 connection of external batteries
5. Turn the switch on the battery cabinet to " ON " position.
ꢁNote
The battery connection and replacement should be done when the UPS is Completely
switched OFF, if batteries are replaced while UPS is ON (hot - swappable ) pay
attention not to reverse battery polarity. 2.5 Wire Connection for Hot Standby UPS
1. Confirm the input circuit breakers of the master UPS and slave UPS are in "OFF "
state ;
2. Remove the short circuit cable used for hot standby of the master UPS（the short
circuit cable between hot standby L1 terminal and B_L terminal）;
3. Connect the wires according to Figure 2-11.
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Chapter 2 Installation
17
Backup UPS
Master UPS
+
-
+
-
L1 B_L B_N
+
-
+
-
L1 B_L B_N
Output neutral line of Backup UPS is connected to the N
terminal of Master's bypass
Output phase line of Backup UPS is connected to the L
terminal of Master's bypass
N
U
V
W
L
N
N
U
V
W
L
N
Output GND in Parallel
Input GND in Parallel
Input Neutral line in Parallel
Input U phese line in Parallel
Input V phase line in Parallel
Input W phase line in parallel
Figure 2-11（a） Wire connection for 10kVA Master-slave hot standby UPS
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Chapter 2 Installation
Backup UPS
Master UPS
+
-
+
-
L1 B_L B_N
+
-
+
-
L1 B_L B_N
Output neutral line of Backup UPS is connected to the N
terminal of Master's bypass
Output phase line of Backup UPS is connected to the L
terminal of Master's bypass
N
U
V
W
L
N
N
U
V
W
L
N
Output GND in Parallel
Input GND in Parallel
Input Neutral line in Parallel
Input U phese line in Parallel
Input V phase line in Parallel
Input W phase line in parallel
Figure 2-11（b）Wire connection for 15/20kVA Master-slave hot standby UPS
Please refer to section 2.3.2 Installation Procedures( item 3 ) for wire connection
requirement for 15/20kVA Master-slave hot standby UPS.
ꢁNote
Confirm the right connection of hot line and neutral line and proper earthing. For hot
standby UPS, the batteries of master UPS and slave UPS must be connected
separately.
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Chapter 3 Operation
19
Chapter 3 Operation
3.1 Operating Mode
3.1.1 Normal Mode
When the input Utility voltage and the load are within specifications, the load is
supplied by inverter, which draws power from rectifier; meanwhile, the charger
float-charges or equalize-charges the battery. When in Normal mode, the Utility
indicator and inverter indicator on the LCD panel be green in colour ,as shown in Fig.
3-1.
OUTPUT VOLT
220.0V
Figure 3-1
ꢁNote
If the UPS is power by generator set , please follow the requirements below:
1. Start up the generator set first without switching on the loads, connect the UPS to the generator,
then switch on the loads one by one till the generator operates stably (to ensure reliable operation of
the generator, it is recommended that the UPS load be less than 30% of generator capacity).
2. It is recommended that the generator capacity be 1.5~2 times of UPS rated capacity.
3.1.2 Bypass Mode
When utility is present and UPS is not turned on , or in the event of overload or other
faults after the UPS is turned on, the load is supplied by Bypass AC source, which
feeds directly from the Utility input; and meanwhile the charger will charge the battery.
When in Bypass mode, the bypass indicator on the LCD panel turns green, as shown
in Fig. 3-2. Please note: In the event of bypass power failure or bypass voltage falling
outside tolerance when the UPS is in Bypass mode, the UPS will cease to supply
electricity to the load .
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20
Chapter 3 Operation
OUTPUT VOLT
215.0V
Figure 3-2
ꢁNote
Under this mode, if the bypass power fails or bypass voltage exceed the bypass
voltage windows. , the UPS will not provide power to the load.
3.1.3 Battery Mode
When the UPS is in Normal mode, in the event of Utility failure or Utility voltage outside
tolerances, the rectifier and charger will turn off , the battery begins to discharge and
supply the load through inverter. When the UPS operates in Battery mode, the battery
indicator and inverter indicator on the LCD panel turns green, as shown in Fig. 3-3,
accompanied with a beep every 3 seconds, giving alarm that the UPS is operating in
Battery mode.
OUTPUT VOLT
220.0V
Figure 3-3
In Battery mode, when the battery voltage is low the preset level , there will be a beep
every 1 second, and the LCD screen displays "BATTERY LOW SHUTDOWN
IMMINENT " .
ꢁNote:
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Chapter 3 Operation
21
Although the battery had been fully charged at factory before delivery, the transport
and storage may result in loss of capacity , hence charging the battery for 8 hours is
required before installing the UPS , so as to ensure adequate battery backup time.
3.1.4 ECO Mode
ECO mode is the economic operation mode. For the load equipment which is less
critical , users can select ECO mode to power the equipment to reduce the power
consuming. When the bypass voltage is normal, the bypass powers the load and the
inverter supplies no load, bypass indicator on the Control Panel is on（green）, as
shown in Figure 3-4.
OUTPUT VOLT
215.0V
Figure 3-4
ꢁNote
Under ECO mode, if bypass power falls out of the bypass voltage range and there is no
overload , the UPS will switch into inverter mode; however if there is an overload and
bypass power fails or the bypass voltage is beyond the range the UPS will not go into
inverter working mode and bypass will be shut off , load will be disrupted. .
3.1.5 Failure Mode
In the event of inverter fault, internal overtemperature or other faults in Normal mode,
the UPS transfers to Bypass mode; however if this occurs in Battery mode, the UPS
shuts down.
In the event of UPS fault, the fault indicator on the LCD panel turns red, as shown in
Fig. 3-4. Meanwhile, the buzzer beeps (except battery and charger fault), and the LCD
screen displays corresponding fault information, see Appendix 1.
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Chapter 3 Operation
OUTPUT VOLT
215.0V
Figure 3-5
3.2 Operation
3.2.1 Startup and Initialization
After checking and making sure that the input and output cables are connected
correctly, turn on the Utility switch and the bypass switch (for long backup time UPS,
turn on the battery switch before closing the Utility switch). Then the system starts up,
the internal fan begins to run, and the system begins to conduct self-test. After system
self-test (the buzzer beeps twice indicating normal startup), the system enters in
Bypass mode, the Utility indicator and bypass indicator turns green, as shown in 3-6.
OUTPUT VOLT
215.0V
Figure 3-6
3.2.2 Turn On the Inverter
1. Start in Normal Mode
1, After system power-on, press and hold the ON/SILENCE button for 1 second, then a
beep is heard. Several seconds later, the bypass indicator goes off and the inverter
indicator turns ON as shown in Fig. 3-7, the UPS is then operating in Normal mode.
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Chapter 3 Operation
23
OUTPUT VOLT
220.0V
Figure 3-7
ꢁNote
If the previous shutdown was resulted from termination of battery discharge because
of Utility failure, the automatic function will be activated when the Utility restores.
2, After the system is started up properly , apply the load gradually and monitor the
load condition through LCD, as shown in Figure 3-8:
LOAD
70.0%
Figure 3-8
3, In the event of load exceeding the rated capacity of the UPS, of 105% load , the
buzzer will beep every 0.5 second with corresponding load percentage indication .
Remove load accordingly so the UPS is not operating under overload condition.
ꢁNote
If the system transfers from Normal mode to Bypass mode for 3 times within 1 hour due
to overload, it will remain in Bypass mode for 1 hour and can't transfer back to Normal
mode till the overload is removed.
2. Start in Battery Mode
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24
Chapter 3 Operation
1. Press and hold the ON/SILENCE button for about 1 second, after a beep and
system self-test, the battery indicator and inverter indicator turns green, as shown in
Fig. 3-9, and the buzzer beeps every 3 seconds, indicating the UPS is operating in
Battery mode.
OUTPUT VOLT
220.0V
Figure 3-9
2. Overload process is same with the above "Start from the utility power".
ꢁNote
If overload occurs when the UPS is on the battery, remove part load immediately or
the system will shutdown after a short time lapse.
3.2.3 Manual Battery Self-testing
When in Normal mode, provided that the Utility voltage is normal, no overload exists,
and the battery voltage is not lower than 240V, battery test can be conducted by
pressing button on the LCD panel press and hold the ON/SILENCE button for 4
seconds (a beep is heard 3 times) and then release the button . 3 seconds later, the
battery test begins, the battery indicator turns on , and the buzzer beeps as in Battery
mode. After battery test, the buzzer stops beeping, the battery indicator goes off, and
the displays on the panel indicators restore to the state prior to test. When battery fault
is detected (no battery, faulty battery, or battery reverse connection) during test, the
fault indicator turns on , and the LCD screen displays "BATTERY FAIL", as shown in
Fig. 3-10（b）.
OUTPUT VOLT
Battery Fault
220.0V
Figure 3-10（a）
Figure 3-10（b）
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Chapter 3 Operation
25
ꢁNote
After battery test, the battery state information will be refreshed. In the event of battery
fault due to the battery not bang fully charged is detected during test, user may re-test
the battery after fully charging it to confirm that the fault is removed.
3.2.4 Turn off the Inverter
1. When the system has Utility input and the Utility is normal, press and hold the OFF
button for about 1 second, then a beep is heard, the inverter indicator goes off and the
bypass indicator turn on , as shown in Fig. 3-11, indicating the UPS has transferred to
Bypass mode.
OUTPUT VOLT
215.0V
Figure 3-11
2, When the system has no Utility input (in Battery mode), press and hold the OFF
button for about 1 second, then a beep is heard, the UPS will have no output and the
LCD screen displays "UPS SHUTDOWN". About 30 seconds later, all panel indicators
go off, and the fan stops running.
3.2.5 Totally Shutdown the System
After turning off the inverter, turn the Utility switch and the bypass switch to OFF, all
panel indicators go off, and the fan stops running (if there is a battery, a delay time of
30 seconds is needed before the fan stops). Then , the system is completely powered
off. If the UPS is connected to external battery, place the switch of the external battery
to OFF. After system power-off, the UPS will have no output to supply the load.
3.2.6 LCD Panel Operation
For LCD Panel Operation please refer to Appendix 1.
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Chapter 4 Maintenance and Storage
27
Chapter 4 Maintenance and Storage
I. Battery Maintenance
The internal battery of GXT2-3X1 series UPS is sealed, lead-acid, maintenance-free
battery. The battery life depends on the ambient temperature, charge and discharge
cycles . High ambient temperature and deep discharge can shorten battery life.
To ensure battery life, the battery should be maintained regularly:
ꢂ Keep the ambient temperature between 15℃and 25℃.
ꢂ Prevent small current discharge, continuous battery discharge time exceeding 24
hours is must be avoided .
ꢂ When the UPS hasn't been used for a long time, and the battery hasn't been
charged for 3 months at specified ambient temperature, or 2 months at high
ambient temperature, please charge it for at least 12 hours.
ꢂ As to external battery of long backup time UPS, the wiring terminals of the external
battery must be checked regularly and, when necessary, should be cleaned.
If the battery backup time is found noticeably shortened, or when the UPS LCD
displays "BATTERY FAIL", please contact the Liebert or its authoriged agent to
confirm whether the battery needs to be replaced. Before replacement, please make
sure that the specifications of the new batteries are correct.
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Chapter 4 Maintenance and Storage
ꢁNotice
1. Never short-circuit the battery terminals, which may result in fire.
2. Never open the battery, as the electrolyte is harmful to human body. In the event of
inadvertent contact of electrolyte, immediately rinse it off with water and go to hospital
for treatment .
II. Keep Air Vent Unblocked
1. Regularly clean the system, especially the air inlet and air outlet. Make sure the air
flows freely inside the chassis. Use vacuum cleaner for cleaning when necessary.
2. Check the air vents on the front, rear, and side panels, make sure they are not
obstructed .
III. UPS State Check
1. Check whether the UPS is faulty: is the fault indicator ON ? Is fault alarm being
displayed.
2. Is the UPS operating in Bypass mode: in normal case, the UPS operates in Normal
mode; if it is operating in Bypass mode, please find out the reason, for instance:
operator intervention, overload, internal fault, etc.
3. Is the battery discharging: when the Utility is normal, the battery shouldn't discharge;
if the UPS is operating in Battery mode, please find out the reason, for instance: Utility
failure, battery test, operator intervention, etc.
IV. Function Inspection
It is recommended to inspect the UPS functions once half year.
1. Press the OFF button, check whether the buzzer, LED indications and LCD display
are normal (see Section 3.1 Operation Mode). Please do this after confirming that the
Utility is normal and data backup has been done.
2. Press the ON/SILENCE button, check again whether the LED indications and LCD
display are normal and the UPS transfers to Normal mode.
3. When the inverter is in Normal mode (the inverter indicator is on ), press and hold
the ON/SILENCE button for 4 seconds to start battery test. Should any battery problem
be found, immediately find out the problem and solve it.
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Chapter 5 Handling Abnormal Problem
29
Chapter 5 Troubleshooting
In the event of UPS fault, please check and remove the fault immediately following the
methods described in the table below. If the fault persist , please contact Liebert or its
authoriged agents.
Sequence
Phenomena
Description
Cause
Action
No.
1
No panel display and A. Utility hasn't been
system self-test when introduced into the
the Utility switch is in system;
Use voltmeter to check
whether the input Utility
voltage is within
the ON position.
B. Input undervoltage. tolerances.
2
The Utility is normal,
A. The input switch is
A. Turn on the input
switch;
but the Utility indicator turned off;
does not turn to and
the UPS operates in
Battery mode.
B. The input power line B. Make sure that the
is not properly
connected;
input power line is
properly connected;
3
4
No alarm is given, but The output power line is Make sure that the output
there is no voltage
output.
not properly connected. power line is properly
connected.
No panel display and A. Utility hasn't been
system self-test when introduced into the
the Utility switch is in system;
Use voltmeter to check
whether the input Utility
voltage is within
the ON position.
The Utility indicator
flashes.
B. Input undervoltage. tolerances.
5
6
The Utility voltage is
outside tolerances.
If the UPS is operating in
Battery mode, please
note the battery backup
time.
The buzzer beeps
every 0.5 second, and
the LCD displays
"OVERLOAD"
Overload.
Disconnect some loads
from the UPS.
7
The fault indicator is on A. The external battery A. Check whether the
external battery switch is
and the LCD displays switch is turned off, or
turned on and its lead is
"BATTERY FAIL".
its lead is not properly
connected;
properly connected;
B. Check whether the
battery is reversely
connected;
B. Battery reverse
connection;
C. Contact the distributor
for battery replacement;
Contact the Liebert or its
authoriged agent for
charger
C. Battery damaged;
8
The fault indicator is
on , and the LCD
displays "CHARGER
FAIL".
Charger fault
replacement/maintenanc
e.
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30
Chapter 5 Handling Abnormal Problem
Sequence
Phenomena
Description
The UPS has reduced A. The battery is not
Cause
Action
No.
9
A. Allow the battery to
charge for more than 8
hours when the Utility is
normal, and then re-test
the discharge time;
B. The battery needs
replacement, please
contact the Liebert or its
authoriged agent. .
A. Check whether there is
air flowing out from
inside.
battery time.
fully charged;
B. The battery is not
able to hold a full
charge due to age.
10
The buzzer beeps, the Internal
fault indicator shines, overtemperature
and the LCD displays
"TEMP OVER"
B. Remove the objects
blocking the vent, or
widen the distance from
the wall;
C. Wait for 10 minutes for
the UPS cools down, then
restart it.
11
12
The buzzer beeps, the UPS output
Restart the UPS after
confirming that load
short-circuit does not
exist.
fault indicator is on ,
and the LCD displays
"OUTPUT SHORT"
short-circuit.
The buzzer beeps, the UPS internal fault
fault indicator shines,
The UPS needs
maintenance, please
contact the Liebert or its
authoriged agent
and the LCD displays
"RECTIFIER FAIL",
"INVERTER FAIL",
immediately .
"AUX SUPPLY FAIL",
or "OUTPUT FAIL".
13
Abnormal noise or
UPS internal fault
Turn off the UPS and cut
off the power input
smell inside the UPS.
immediately, contact
Liebert or its anthoriged
agent for assistance.
When reporting UPS , please provide the machine model and machine serial No. (the
bar code on the rear panel of the UPS).
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Chapter 6 Service after Sales
31
Appendix 1 LCD Panel Displays and Operation
LCD display interface is formed by LCD, LED and keys (see Appendix-Figure 1-1), it
mainly finish the displaying and control of the following information: UPS basic
parameter information, operating parameters information, alarm information, failure
code information and function setup information.
Utility indicator (green)
Battery indicator (green)
Inverter indicator (green)
Fault indicator (red)
Bypass indicator (green
Silence Key
LCD Display Panel
Off Key
Enter Key
Scroll Key
Appendix-Figure 1-1 LCD Panel
1. Constitution of Display Panel
The Panel is formed by 1 group LED indicator, 1 LCD screer and 4 keys.
1) LED indicators are formed by 4 green lights and 1 red light.
2) LCD can display double-row Chinese information or 4-row English information.
3) The keys are :On/Silence key, Off key, scroll key and Enter key.
2. Function of display Panel
1. Displaying information of LED
1）failure indicator（red）: on only when failure is detected .2）The Utility indicator
（green）: when the Utility is normal, it is on, when utility fails the indicator is off, when
utility is out of range , it flashes.
3）Inverter indicator（green）:when the inverter is working, it is on；when it does not
work, the indicator is off.
4）Bypass indicator（green）:when the Bypass is working, it is on； when it is not
activated , the indicator is off.
E1-20010329-C-1.0
32
Chapter 1 Product Introduction
5）Battery indicator（green）:when the battery is discharging , it is on； when it not
discharging , the indicator is off.
2. Display Information
1）UPS basic parameter information
Displays UPS' Model and present on/off state
2）operating parameters information
OUTPUT VOLT, OUTPUT FREQ, OUTPUT CURRENT, LOAD, INPUT VOLTAGE(U),
INPUT VOLTAGE(V), INPUT VOLTAGE(W), INPUT FREQ, BYPASS VOLT,
BATTERY VOLTAGE 1/CHARGING VOLT1, BATTERY VOLTAGE 2/CHARGING
VOLT 2, BATT CAPACITY CHARGING/FULL CHARGED, INTERNAL
TEMPERATURE.
3）alarm information（According to priority, from the highest to the lowest）
UPS SHUTDOWN, AUX SUPPLY failure, OUTPUT SHORT CIRCUIT, INVERTER
FAIL, RECTIFIER FAIL, OVER TEMP, OVERLOAD, CHARGER FAIL, BATTERY
FAIL, NEUTRAL FAIL, I/P PHASE FAIL, BATTERY LOW shutdown imminent and
output SWITCH FAIL.
4）failure information
Displays the recorded failure code before the last UPS shutdown at power off.
5）Configuration Settings
Chinese/English menu setup, OPERATING MODE setup, BOOST CHG SET, TEMP
COMP SET, BATT CAP SET, M/S setup M/S cycle time set up , equipment address
setup, frequency tracking range setup.
(1) Chinese/English menu settings includes:
Chinese
No change
English
(2) working mode settings includes:
No change
Normal Mode
ECO Mode
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Chapter 6 Service after Sales
33
(3) equalize function settings includes:
Enable
No change
Disablet
(4) temperature Compensation settings includes:
Enable
No change
Disable
(5) Battery Capacity setup means the Ah of batteries used by UPS, for example: The
battery capacity in two battery groups( each group contains 20 batteries) is all 100Ah,
so the battery Capacity should be set up as 100Ah, includes:
52Ah
24Ah
65Ah
76Ah
84Ah
100Ah
28Ah
38Ah
No change
200Ah
130Ah
500Ah
400Ah
300Ah
(6) Master, Slave, Single setup includes: Master, Slave, Single UPS, No modification
of the settings.
No change
Master
Slave
Single Ups
(7) The master-slave alternated time can only be set up for the master so as to decide
the alternated time with the slave.
No change
7 days
90 days
180 days
30 days
No shift
E1-20010329-C-1.0
34
Chapter 1 Product Introduction
(8) The equipment address setup can directly change the 3-bit digit which forms the
equipment's address, the equipment address range is 0~255.
(9) Frequency tracking range settings includes:
2%
1%
4%
6%
No change
10%
User can select according to the power supply frequency requirement of load.
3. Function of Keys
Key
Function
When the UPS is in off state, pressing this key
for 1 second switch on the inverter ; When the
UPS is in alarm mode , pressing this key for 1
second can silence the alarm ; When the UPS is
on with no alarm, pressing this key for 4 second
can start battery self testing.
〈On/Silence〉
When the UPS is on with no alarm, pressing this
key for 1 second will shutdown the inverter.
Scroll between different menus of the same
level or complete the parameter selection .
Used in opening the menu, confirm and return.
〈Off〉
〈Scroll 〉
〈Enter〉
3. Menu Operation
See Appendix-Figure 1-2: Keypad Operation:
E1-20010230-C-1.0
Chapter 6 Service after Sales
35
Back to Main Menu
Back to Main Menu
No change
Prohibit
Display Present Value )
(
Temp Compensate setup
)
Display Present Value
EC setup
(
Enable
Back to Main Menu
Present Second
Alarm
Present Second
Alarm
Appendix-Figure 1-2 Keypad Operation
1. first level menu
Pressing the scroll key can switch between " failure lookup", " operating parameters" and
"function setup". Press the enter key to enter the menus of " operating parameters" ,"
failure lookup" or " function setup ".
ꢁNote
You can only enter “function setup”menu by pressing the enter key for at least 5
seconds
2. second level menu
A) After entering "operating parameters" menu , operating parameters' information can
be viewed ; when the screen displays " Return to main menu" , press enter key to
return to main menu.
E1-20010329-C-1.0
36
Chapter 1 Product Introduction
B) After entering " function setup " menu , function information which can be setup can
be viewed and set by pressing the scroll key ; when the screen displays " Return to
main menu", press enter key to return the main menu of " operating parameters ".
C) After entering " function setup" menu , the parameters whose value is to be
modified are displayed in reverse contrast text mode and the parameters' values can
be changed by pressing the scroll key ; save the parameters which have already been
modified by pressing the enter key and the parameters' value will be stored and the
value display will switch from reverse contrast to normal text mode.
ꢁNote
When the equipment's address is changed, the charging between 3-bit digits are
done through auto shifting when no key is pressed for 3 seconds.
D) When it is in alarm state, alarm information can be viewed by pressing the scroll
key；When the screen displays "Return to main menu" , press the enter key to return
"operating parameters" main menu.
4. Information LCD-displaying Priority
1. LCD will display present alarm information of the highest priority if no key is pressed
in 30 second.
2. LCD-displaying information will not be changed when there is no alarm, the LCD will
display level 2 sub menu such as "Output current" when no key is pressed. On the
contrary, if the LCD isn't displaying the level 2 sub menu information and no key is
pressed in 30 second, it will return to the state to display " Output voltage: xxx ".
E1-20010230-C-1.0
Appendix 2 Communication Port Description
37
Dry Contact Communication Mode
Port Definition
1
2
3
4
5
NC
Utility Fail
6
OFF
GND
NC
7
8
NC
GND
Battery Undervolt
9
NC
Pin2 : When the Utility fails, this pin will change from OPEN to CLOSE, it is OPEN in normal state；
Pin5 : When the battery voltage is low, this pin will change from OPEN to CLOSE, it is OPEN in normal state；
Pin6 : When +5V voltage has been applied for 1 second, the UPS will shutdown；
Pin4 : GND for signal；
Pin7 : GND for signal；
Other Pin: No wire connection
Dry Contact Communication Mode can perform the following functions
ꢂ When the Utility fails, the Utility failure information is provided ;
ꢂ When the battery capacity is going to be used up, battery low information will be
provided ;
ꢂ Control the shutdown of UPS.
Relay Communication Mode
Port Definition
1
2
3
4
9
11
12
5
6
8
10
13 14 15
7
ALARM
FAULT
BYPASS
BATT ¡ L¤OW
SHUTDOWN
Signal
alarm
Output signal , summary alarm , non shutdown
alarms only.
failure
Output signal UPS fail , will shutdown or transfer to
bypass.
Bypass
battery low
shutdown
Output signal, power supplying mode
Output signal, battery mode
input signal, UPS shutdown command
E1-20010329-C-1.0
38
Appendix 2 Communication Port Description
Connection
alarm Signal
failure Signal
Pin . 1/2/3 （normally open /common
normally close）
Pin . 4/5/6 （normally open/common
/normally close）
Bypass mode signal
battery low Signal
Shutdown Signal
Pin . 7/8/9 （normally open/common
/normally close）
Pin . 10/11/12 （normally open/
common / normally close）
Pin .14/15th Pin（short circuited
normally , UPS shutdown when open
circuit ）
Connection of relays
alarm Signal Relay
In normal state, Pin . 2/3 are short
circuited, Pin . 1/2 pins are short
circuited when alarm is activated .
In normal state, Pin . 5/6 are short
circuited, No. 4/5 pins are short
circuited when signal is activated.
failure Signal Relay
Bypass mode Signal Relay In normal state, Pin . 8/9 are short
circuited, Pin .7/8 are short circuited
when signal is activated.
battery low Signal Relay
Shutdown Signal Relay
In normal state, Pin . 11/12 are short
circuited_, Pin . 10/11 are short
circuited when signal is activated .
Invalid when pin 14/15 are open
circuit , UPS will shutdown .
Relay Contact Capacity
250VAC 2A or 30VDC
2A
E1-20010329-C-1.0
Appendix 3 Product Specification 39
Appendix 2 Product Specification
Capacity
Model
10kVA
15kVA
20kVA
GXT2-3X1 -0200L
GXT2-3X1
-0100L
GXT2-3X1
-0150L
Input
Input Mode
Three-phase/four-line input
400 Vac( line to line)
rated voltage
voltage range
1. If the Phase to neutral voltage is in the range of 176-276Vac, the UPS
can work normally with full load;
2. If the phase voltage is in the range of 120-176Vac, the ability of the
UPS to supply the load will decrease linearly with the decreasing of the
input voltage, it can work with half load when the voltage is 120Vac.
3. Working under Phase failure condition:
1）if one Phase failure, the other two phases are normal, the UPS can
supply 50 % rated load at most;
2）if input two phases failure, the other one phase is normal, the UPS can
supply 25 % rated load at most
Frequency
45~55Hz
Power Factor
≥0.95 At rated load and rated voltage
0.7
Output
Power Factor
Voltage
230Vac±3%
Line regulation
< ±1% （0~100% Linear Load）
< ±2% （0~100% Linear Load）
Load e
regulation
Voltage
< 4%（0-100% Linear Load）;< 5%（0-100% nonlinear Load）
Distortion
Frequency
Output
In normal mode, when the Bypass frequency is in the tracking range
（50Hz±10%, 6%, 4%, 2% and 1% optional, defailure value is ±
4%）,the inverter Output will track Bypass frequency;when the Bypass
frequency is beyond the limit, the inverter Output frequency is 50Hz±
0.2%;in battery mode, the inverter Output frequency is 50Hz±0.2%
Frequency slew
rate
1 Hz/s
Inverter Overload be able to withstand 105~125% rated load for 10min;then the UPS
Capability
（Utility or
Battery）
transfers to bypass output;
be able to withstand 125~150% rated load for 1min,then the UPS transfers
to bypass output;
When Load Power> 150%,the inverter can work for longer than
200ms,then the UPS transfers to bypass output;
Bypass Overload If the load current is in the range of 135%-155% rated output current,the
Ability
UPS will be disconnected from the load after 15min;
If the load current is more than 155% rated current,the UPS will be
disconnected from the load after 3min（if extreme big current occurs in
3min,the disconnection time is decided by the release time of bypass
breaker）
Crest Factor
3:1
E1-20010329-C-1.0
40
Appendix 3 Product Specification
Capacity
Model
10kVA
15kVA
20kVA
GXT2-3X1
-0100L
GXT2-3X1
-0150L
GXT2-3X1 -0200L
Bypass Voltage
120~253Vac （non- ECO mode）
Efficiency in
Normal Mode
(100% Linear
Load)
> 89%
> 89%
> 89%
> 88%
Efficiency in
battery mode
(100% Linear
Load)
> 88%
> 88%
interrupt Utility Failure
time
0ms
Transferring
< 4ms
between inverter
and Bypass
（Synchronized ）
Voltage transient response At the Resistive Load from 0~100% or 100%~0, the Output dynamic
voltage change range is lower than 5% Rated Voltage. Transient recovery
time is less than 60ms.
Audible Noise
< 55dB（1m） < 60dB（2m）
LCD
Display
Safety
Passed CCEE certification,complied with EN60950 and EN50091-1.
Line Voltage 554Vac,1 hour（static）
Highest Input Voltage :
EMC
Conduction:EN55022 Class A
Radiation: EN55022 Class A
Harmonic current:THD<25%（With input isolated transformer connected）
Immunity
DC offset
EN61000-4-2.3.4.5.6.8.11 Level III
Lower than ±500mVdc
MTBF(Inverter )
MTBF(System)
30000 hours （ambient temperature is 25℃,rated condition）
150000 hours （Response time + maintenance time should be less than 24
hours）
MTTR (Board Maintenance)
Insulation Resistance
dielectric Strength
1 hour（Board Maintenance）
> 2MW （500Vdc）
（Output to earth，Input to earth ）2820Vdc,leakage current<3.5mA, 1min
with no arc and breakdown
Surge Protection
Protection Level
Satisfy the IV type of IEC60664-1, that is the ability to withstand
1.2/50uS+8/20uS exceeds 6kV/3kA.
IP21
E1-20010329-C-1.0
Appendix 3 Product Specification 41
Capacity
Model
10kVA
15kVA
20kVA
GXT2-3X1 -0200L
GXT2-3X1
-0100L
GXT2-3X1
-0150L
Environment Condition
E1-20010329-C-1.0
42 Appendix 4 Accessories
Appendix 3 Accessories
Optional Product name
battery cabinet
Product Model
UF-B0100-38
Remark
20 38Ah batteries
20 65Ah batteries
20 100Ah batteries
UF-B0100-65
UF-B0100-100
E1-669001-20010230-C-1.0
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